Caramelize the fennel and onion
Heat the olive oil in a large wide pan or Dutch oven over medium-low heat. Add the fennel and onion with a good pinch of salt. Cook, stirring occasionally, until completely softened, collapsed, and deeply golden — this takes patience, around 25–30 minutes. Don't rush it with the heat; low and slow is what builds the sweetness. Add the garlic and fennel seeds and cook for another 2 minutes until fragrant.

Brown the sausage
Push the fennel mixture to the edges of the pan and increase the heat to medium-high. Add the sausage meat to the centre, breaking it up into irregular pieces with a wooden spoon. Leave it to brown undisturbed for a couple of minutes before stirring. Cook until the sausage is cooked through and well coloured. Stir everything together.

Build the sauce
Add the chilli flakes and pour in the white wine, scraping up any caramelized bits from the bottom of the pan. Let it bubble and reduce by half, about 3–4 minutes. Add
the Colavita Crushed Tomatoes and stir to combine. Bring to a simmer, then reduce the heat to low and cook uncovered, stirring occasionally, for 20–25 minutes until the sauce is thick, glossy, and deeply flavoured.

Make the spicy garlicky crumbs
In a wide skillet over medium heat, warm the olive oil. Add the garlic and chilli flakes and cook, stirring constantly, until the garlic is just turning golden and fragrant —
watch it closely, about 1–2 minutes. Add the breadcrumbs and toss to coat well in the oil. Cook, stirring frequently, until the crumbs are deep golden, crisp, and smell nutty and toasted, about 4–5 minutes. Remove from heat and immediately stir in the parsley and lemon zest. Season with salt. Spread on a plate and keep loose — don't let them clump. Make these just before serving (see Notes).

Cook the pasta
Bring a large pot of water to a rolling boil. Season aggressively with kosher salt — it should taste like the sea. Cook the Colavita Penne Rigate until al dente, checking 1–2 minutes before the package time. Reserve at least 1 cup of pasta cooking water before draining.

Bring it together
Add the drained penne to the sauce and toss well over medium heat, starting with ¼ cup of pasta cooking water and adding more a splash at a time until the sauce is
glossy and clings to every piece of pasta. Taste and adjust salt, pepper, and chilli.

Plate and finish
Divide the pasta between warmed bowls (run them under hot water for a minute, or place in a low oven briefly). Pile the spicy garlicky crumbs generously over the top — don't be shy, they're the crown of the dish. Scatter the reserved fennel fronds over and finish with a dusting of Parmigiano-Reggiano. Serve immediately while the
crumbs are still crisp.

RECIPE NOTES
● Low and slow on the fennel: The caramelization is the foundation of the whole dish. Don't rush it with high heat — you want the fennel and onion to completely collapse and turn golden, not just soften. Budget at least 25–30 minutes.
● Breadcrumb texture: Coarse, irregular crumbs from day-old sourdough or ciabatta give the best crunch. Pulse the bread in a food processor just a few times — you want rubble, not fine powder. Panko works in a pinch but lacks the same character.
● Make the crumbs last: They go stale fast once fried, so cook them just before serving and keep them loose in the pan until the moment they hit the bowl.
● Sausage options: Fennel sausage doubles down on the anise notes in a great way. 'Nduja stirred in at the end in place of the crumbled sausage adds a silky,
spicy richness. For a vegetarian version, omit the sausage and add a tin of white beans with the tomatoes.
● Fennel fronds: Don't throw them away — they look beautiful scattered on top and their grassy, anise flavour is a perfect finishing note.